Rolling-mill.



No. 848.438. PATENTED MAR. 26, 1907 W. H. BROWN. ROLLING MILL.

APPLICATION FILE-D 11.19 1900.

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WITNESSES INVENTOR PATENTED MAR. 26, 1907. W. H. BROWN.

ROLLING LL. APPLICATION L AR.19. 1906.

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ROLLlNG-MlLL.

Specification of Letters Patent.

Patented March 26, 1907.

Application filed March 19, 1906. Serial No. 306.758.

To all whom, it may concern.-

Be it known that I, W'ILLIAM H. BROWN, of Pittsburg, Allegheny county,Pennsylvania, have invented a new and useful Rolling-Mill, of which thefollowing is a full, clear, and exact description, reference being hadto the accompanying drawings, forming part of this specification, inwhich Figure 1 is a sectional side elevation. Fig. 2 is a centralvertical section of a mill constructed in accordance with my invention;and Figs. 3 and 4 are detail views.

My invention relates to rolling-mills for rolling sheet metal.Heretofore it has been necessary to pile the plates or sheets together,reducing the same to thin gages, for the reason that the rolls cannot beforced together by suflicient pressure to reduce the metal to thedesired gage in a single thickness.

My invention is designed to provide for reducing the metal to a thinnergage than has heretofore been possible without piling or forming packs,and consists in providing at least one of the rolls with a cut-away portion at one side extending, preferably, through its entire length. Thetrue circle of the roll will be flattened slightly along one side, thusallowing the rolls to be brought close together by the adjustingmechanism.

In the drawings, in which I show the invention as applied to a two-highmill, 2 2 re resents the housings, and 3 and 4 the re ls of the mill.

5 are the ordinary adjusting-screws, which may be arranged in anydesirable manner.

The upper roll is flattened at one point in its circumference andthroughout its length, as shown at 6. This may be done by planing awaythe metal at this point to the desired depth to form a flat or curvedface. For example, the metal may be cut away to about the depth of aneighth of an inch to form a flat face.

In using the mill the rolling action will take place between thatportion of the circumference of the upper roll which lies between theedges a a of the flattened portion.

! In reducing the metal to thin gages the operator will screw down theupper roll when the I flattened portion is in the position shown in Fig.l, and upon rotation of the rolls their pressure will be increased byreason of this further screwing down, which may be carried out by reasonof the flattening. The

than that part of the circumference of the upper roll between the linesa a. By this cutting away the rolls may be brought so closely togetherthat the sheet or plate may be reduced much thinner than was heretoforepossible without piling. The invention may also be used to reduce a pileor pack and avoid the necessity for repiling or reforming of the packs.

The advantages of my invention will be apparent to those skilled in theart. Thin gages of metal may be obtained by rolling i single sheets,thus avoiding the necessity for l repiling, or, if still thinner gagesare employed, the piling may be reduced as to the number of plies or asto the number of repilings, or both.

The invention may be applied to a threehigh mill. The shape and depth ofthe flattened portion may be varied, one or more of the rolls may bepositively driven, and many other changes may be made in the form andarrangement of the parts without departing from my invention.

I claim A mill having rolls provided with plain faces throughout theirworking length and arranged to feed through and roll sheet metal atright angles to their axes, one of said rolls being reduced in diameterfor its entire working length on one side thereof, said mill havingroll-adjusting mechanism; substantially as described.

In testimony whereof I have hereunto set my hand.

WILLIAM H. BROWN.

WVitnesses GEO. B. BLEMING, H. M. CORWIN.

metal being rolled is preferably not longer

